You can check the serial number with Cartier here. Both numbers should also be centered within the temple arm, neat and orderly.The couple of websites I visited had a similar style, but they were in 18k gold. I did a google search, 'cartier gold dome ring' and clicked on the left side of page to images, and qiute a few rings in a similar style were made by Cartier. Hi Vintage, What a nice ring! It does have that real gold look and quality about it. It listed a SOLD, 1960s Tank with serial number on the ba. This also posted in response to a year old postings between KG and Craig Weiss that. For example, it is a common mistake on Cartier watches to blur out the case number instead of the watch serial number on online eBay listings.
